With one eye on the election polls and the other on Greece, stocks pushed higher Monday in muted volume. The Nasdaq climbed 0.6%, boosted by 1% gains for Apple (AAPL) and Amazon.com (AMZN) . The S&P 500 rose 0.2%, while the Dow Jones industrial average ticked up 0.1%. Volume sank across the board. Greece is still fighting for its financial life, with Prime Minister Antonis Samaras vowing Sunday that proposed wage and pension cuts, key elements in